US Bridges

IH 43 SB over Sugar Creek

Fair

Walworth County, Wisconsin · 4.8 MI S JCT Sth 120 · Structure no. B64011100000000

Built
1971
54 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
45 ft
3 main spans
Daily traffic
9,800
2022 count
Owner
State
State Highway Agency

About this bridge

IH 43 SB over Sugar Creek is a concrete continuous culvert carrying IH 43 SB over Sugar Creek in Walworth County, Wisconsin. It was built in 1971, so it is 54 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 9,800 vehicles a day, roughly 17% of them trucks, projected to reach 11,760 by 2042. The structure is 45 ft (13.8 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIH 43 SB
CrossesSugar Creek
Location4.8 MI S JCT Sth 120
RouteInterstate 43
CountyWalworth County
StateWisconsin
Coordinates42.7234, -88.46801
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating37.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length45 ft (13.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,800 (2022)
Projected traffic11,760 by 2042
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 43 SB over Sugar Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is IH 43 SB over Sugar Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does IH 43 SB over Sugar Creek carry?

About 9,800 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is IH 43 SB over Sugar Creek?

The structure is 45 ft (13.8 m) long with a longest span of 10 ft (3 m).

Who owns IH 43 SB over Sugar Creek?

It is owned by the State Highway Agency.